Among different SPD techniques, Equal channel Angular Pressing has attracted the most attentions, because of applying large strain to solid bulk materials. In this research, ECAP process up to 6 passes was carried out on a pure copper and a 6012 Al-Mg-Si alloy with BC route in ECAP dies with Φ=120 and Ψ=20 and diameter of 20and 10 millimeter respectively. Moreover, X-ray diffraction (XRD) syste...

Background: The psychologist who works in bariatric surgery has a role to receive, evaluate, prepare and educate the patient who will undergo the surgical procedure. Psychological evaluation becomes important in so far as allows us to obtain data on personal and familiar history and allow tracing of possible psychopathology. Aim: To collect data on psychological evaluations of patients in a...

IntroductionDuring the last 3 years an extensive intra operative measurement protocol was used to objectively measure the function and interaction of the cochlear implant (CI) outcome measures of auditory nerve fibers (ECAP) and implant evoked electrically auditory brainstem responses (impEABR). The aim of this study is to find out if these measurements can be used as a predictor of speech and ...

The nucleation and subsequent development of the Portevin-Le Chatelier bands during tensile deformation in a binary AlMg alloy was investigated by digital image correlation technique. following states material were employed for current investigation: coarse-grained (CG), fine-grained (FG) after equal channel angular pressing (ECAP), severely strained (SS) ECAP followed cold rolling. Special att...

The generation of a high density twins few tens nanometers in size can enhance both strength and ductility. present work aims to produce highly twinned microstructure Cu-6wt% Zn alloy moderate stacking fault energy (SFE) by equal channel angular pressing (ECAP) using die with angles ϕ=110° Ψ=0. X ray diffraction (XRD) shows that defects is stored up 2 passes then recovery takes place. EBSD imag...

The relation between processing parameters (routes, passes) and mechanical behavior of equal channel angular pressing (ECAP) processed Mg alloys has been researched systematically by Hai-Long Jia, co-workers in this article, number 2000790. A low-cost high-strength-ductility wrought made combining fine DRXed grains, nano-scale secondary phase particles strong basal texture.

The TWIP steels show high strain hardening rates with high ductility which results in high ultimate tensile strength. This makes their processing by equal channel angular pressing very difficult. Up to now, this has only been achieved at warm temperatures (above 200 C). In this paper, a FeMnCAl TWIP steel has been processed at room temperature and the resulted microstructure and mechanical prop...